/Engine/Source/Runtime/Engine/Public/Animation/AnimNodeMessages.h
Call MakeEventContextData for the top entry of each MessageType, returning interfaces for types that return event data
void MakeEventContextData ( [TArray](API\Runtime\Core\Containers\TArray)< [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< const [IAnimNotifyEventContextDataInterface](API\Runtime\Engine\Animation\IAnimNotifyEventContextDataInter-) >> & ContextData ) const